diff --git a/src/spicelib/devices/adms/admst/ngspiceMODULEdefs.h.xml b/src/spicelib/devices/adms/admst/ngspiceMODULEdefs.h.xml
index 7875fc811..605bc531d 100644
--- a/src/spicelib/devices/adms/admst/ngspiceMODULEdefs.h.xml
+++ b/src/spicelib/devices/adms/admst/ngspiceMODULEdefs.h.xml
@@ -3,7 +3,10 @@
 <!--
   $Id$
   $Log$
-  Revision 1.11  2007-02-10 16:08:41  dwarning
+  Revision 1.12  2007-05-11 07:19:57  r29173
+  added support to 'div' builtin function
+
+  Revision 1.11  2007/02/10 16:08:41  dwarning
   unification for func and derivative
 
   Revision 1.10  2006/03/07 10:12:12  r29173
@@ -205,6 +208,13 @@ if(isinf(var)) \\
 #define _pow(xy,x,y)             xy = pow(x,y);
 #define _dx_pow(dx,xy,x,y)       dx = (x==0.0)?0.0:((y/x)*xy);
 #define _dy_pow(dy,xy,x,y)       dy = (x==0.0)?0.0:((log(x)/exp(0.0))*xy);
+
+#define _div1(x,y)               ((x)/(y))
+#define _div0(xy,x,y)            xy=(x)/(y);
+#define _div(xy,dx,x,y)          dx=1/(y); xy=(x)*dx;
+#define _dx_div(dx,xy,x,y)
+#define _dy_div(dy,dx,xy,x,y)    dy = -xy*dx;
+
 #define _limexp(val,arg)         val = ((arg)&lt;(80)) ? (exp(arg)) : (exp(80)*(1.0+(arg-80)));
 #define _d_limexp(val,dval,arg)  val = ((arg)&lt;(80)) ? (exp(arg)) : (exp(80)*(1.0+(arg-80))); dval = val;
 #define _fabs(val,arg)           val = fabs(arg);
diff --git a/src/spicelib/devices/adms/admst/ngspiceMODULEguesstopology.c.xml b/src/spicelib/devices/adms/admst/ngspiceMODULEguesstopology.c.xml
index 62ed212f9..7669df710 100644
--- a/src/spicelib/devices/adms/admst/ngspiceMODULEguesstopology.c.xml
+++ b/src/spicelib/devices/adms/admst/ngspiceMODULEguesstopology.c.xml
@@ -3,7 +3,10 @@
 <!--
   $Id$
   $Log$
-  Revision 1.12  2007-05-07 09:01:18  r29173
+  Revision 1.13  2007-05-11 07:19:58  r29173
+  added support to 'div' builtin function
+
+  Revision 1.12  2007/05/07 09:01:18  r29173
   traverse blocks named 'noise' or 'initial_step' during guesstopology code creation
 
   Revision 1.11  2007/05/04 14:48:09  r29173
@@ -67,6 +70,7 @@
 <!-- expression//function: mapping verilog-name == C-name of function -->
 <admst:template match="fname">
   <admst:choose>
+    <admst:when test="[name='div']"><admst:return name="fname" value="_div1"/></admst:when>
     <admst:when test="[name='abs']"><admst:return name="fname" value="fabs"/></admst:when>
     <admst:when test="[name='\$shrinkl']"><admst:return name="fname" value="shrinkl"/></admst:when>
     <admst:when test="[name='\$shrinka']"><admst:return name="fname" value="shrinka"/></admst:when>
diff --git a/src/spicelib/devices/adms/admst/ngspiceVersion.xml b/src/spicelib/devices/adms/admst/ngspiceVersion.xml
index 5f96edd01..7cd920b1a 100644
--- a/src/spicelib/devices/adms/admst/ngspiceVersion.xml
+++ b/src/spicelib/devices/adms/admst/ngspiceVersion.xml
@@ -5,7 +5,10 @@
 -->
 <!--
   $Log$
-  Revision 1.17  2007-05-02 14:56:49  r29173
+  Revision 1.18  2007-05-11 07:19:58  r29173
+  added support to 'div' builtin function
+
+  Revision 1.17  2007/05/02 14:56:49  r29173
   changed required adms version to 2.2.6
 
   Revision 1.16  2007/04/30 13:10:35  r29173
@@ -876,6 +879,49 @@
       <admst:apply-templates select="." match="function:getname"/>
       <admst:value-to select="/simulator/tmp" value="__%s_$index"/>
     </admst:when>
+    <admst:when test="[name='div']">
+      <admst:value-of select="index(./subexpression/expression/function,.)"/>
+      <admst:variable name="index" select="%s"/>
+      <admst:if test="/simulator/probe">
+        <admst:for-each select="arguments"> 
+          <admst:choose>
+            <admst:when test="[position(.)=1]">
+              <admst:apply-templates select="." match="subexpression:stringify:noprobe"/>
+              <admst:variable name="x" select="%s"/>
+              <admst:value-of select="/simulator/ddx"/>
+              <admst:variable name="dx" select="%s"/>
+            </admst:when>
+            <admst:when test="[position(.)=2]">
+              <admst:apply-templates select="." match="subexpression:stringify:noprobe"/>
+              <admst:variable name="y" select="%s"/>
+              <admst:value-of select="/simulator/ddx"/>
+              <admst:variable name="dy" select="%s"/>
+            </admst:when>
+            <admst:otherwise>
+              <admst:count select="../arguments"/>
+              <admst:value-of select="../name"/>
+              <admst:error format="%s(...): two arguments expected - %s found(s) \n"/>
+            </admst:otherwise>
+          </admst:choose>
+        </admst:for-each>
+        <admst:choose>
+          <admst:when test="[$dx='0.0' and $dy='0.0']">
+            <admst:value-to select="/simulator/ddx" value="0.0"/>
+          </admst:when>
+          <admst:when test="[$dx='0.0']">
+            <admst:value-to select="/simulator/ddx" value="(__dFy_%(name)_$index*$dy)"/>
+          </admst:when>
+          <admst:when test="[$dy='0.0']">
+            <admst:value-to select="/simulator/ddx" value="(__dFx_%(name)_$index*$dx)"/>
+          </admst:when>
+          <admst:otherwise>
+            <admst:value-to select="/simulator/ddx" value="(__dFx_%(name)_$index*$dx+__dFy_%(name)_$index*$dy)"/>
+          </admst:otherwise>
+        </admst:choose>
+      </admst:if>
+      <admst:apply-templates select="." match="function:getname"/>
+      <admst:value-to select="/simulator/tmp" value="__%s_$index"/>
+    </admst:when>
     <admst:when test="[class='builtin']">
       <admst:value-of select="index(./subexpression/expression/function,.)"/>
       <admst:variable name="index" select="%s"/>
@@ -1216,7 +1262,9 @@
         <admst:value-of select="position(.)-1"/>
         <admst:apply-templates select="." match="function:getname"/>
         <admst:apply-templates select="." match="function:getname"/>
-        <admst:text format="_%s(__%s_%s,"/>
+        <admst:text format="_%s"/>
+        <admst:text test="[name='div']" format="0"/>
+        <admst:text format="(__%s_%s,"/>
         <admst:join select="arguments" separator=",">
           <admst:apply-templates select="." match="subexpression:stringify:noprobe"/>
           <admst:text format="%s"/>
@@ -1252,7 +1300,7 @@
         <admst:if test="arguments[count(.)=2]">
           <admst:for-each select="arguments">
             <admst:if test="[position(.)=1]">
-              <admst:if test="math[dependency!='constant']">
+              <admst:if test="[(../name='div') or (math/dependency!='constant')]">
                 <admst:value-of select="../position(.)-1"/>
                 <admst:apply-templates select=".." match="function:getname"/>
                 <admst:text format="double __dFx_%s_%s=0.0;\n"/>
@@ -1303,6 +1351,7 @@
           <admst:apply-templates select="." match="function:getname"/>
           <admst:apply-templates select="." match="function:getname"/>
           <admst:text format="_%s(__%s_%s,"/>
+          <admst:text test="[name='div']" format="__dFx_%(name)_%(position(.)-1),"/>
           <admst:join select="arguments" separator=",">
             <admst:apply-templates select="." match="subexpression:stringify:noprobe"/>
             <admst:text format="%s"/>
@@ -1334,7 +1383,9 @@
                 <admst:value-of select="../position(.)-1"/>
                 <admst:apply-templates select=".." match="function:getname"/>
                 <admst:apply-templates select=".." match="function:getname"/>
-                <admst:text format="_dy_%s(__dFy_%s_%s,__%s_%s,"/>
+                <admst:text format="_dy_%s(__dFy_%s_%s,"/>
+                <admst:text test="[../name='div']" format="__dFx_%(../name)_%(../position(.)-1),"/>
+                <admst:text format="__%s_%s,"/>
                 <admst:join select="../arguments" separator=",">
                   <admst:apply-templates select="." match="subexpression:stringify:noprobe"/>
                   <admst:text format="%s"/>